private void OnAddCluster(ClusterTreeNode parent)
{
// avoid many intermediate updates
myTransformationsObserver.ModuleChanged -= OnTransformationsChanged;
var newClusterId = Guid.NewGuid().ToString();
var captionModule = myPresentation.GetModule <ICaptionModule>();
captionModule.Add(new Caption(newClusterId, "<new>"));
myPresentation.DynamicClusters().AddCluster(newClusterId);
// start new clusters folded
myPresentation.ClusterFolding().Toggle(newClusterId);
// update tree
{
var clusterNode = new ClusterTreeNode(myPresentation)
{
Parent = Root,
Id = newClusterId,
Caption = captionModule.Get(newClusterId).DisplayText,
IsDragAllowed = false
};
Root.Children.Add(clusterNode);
// register for notifications after tree is built to avoid intermediate states getting notified
PropertyChangedEventManager.AddHandler(clusterNode, OnSelectionChanged, PropertySupport.ExtractPropertyName(() => clusterNode.IsSelected));
// nothing ot update
//myNodeClusterCache = null;
}
Root.Children.Single(n => n.Id == newClusterId).IsSelected = true;
myTransformationsObserver.ModuleChanged += OnTransformationsChanged;
}
